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Battery on brand new Google Pixel 2 XL

I got my Pixel yesterday and was very excited to get my hands on it after hearing about the amazing battery life from those in the shop and on online reviews. The battery life was the main thing that pulled me in over the Samsung Galaxy S8+, but I'm not sure it's all it was hyped up to be so far! Day one with the phone, it was at 100% charge when I left the house this morning, within 5 hours it was at 60% and within 6 it was at about 52%. I checked my battery usage, the only apps I'd used were Apple Music which took 16%, messenger which used 5%, and Facebook which used 2%. All tabs were closed after I'd finished with the app, also. After seeing this, I was really shocked as to why it has drained so fast, considering I was told with light - moderate use it should last all day easily. Is this the average battery drainage or could something be up? It's not the worst battery I've ever had, but certainly isn't the battery I was expecting given how much the people in the shop/in reviews I'd seen had praised it.

Emmiesxx said:
I got my Pixel yesterday and was very excited to get my hands on it after hearing about the amazing battery life from those in the shop and on online reviews. The battery life was the main thing that pulled me in over the Samsung Galaxy S8+, but I'm not sure it's all it was hyped up to be so far! Day one with the phone, it was at 100% charge when I left the house this morning, within 5 hours it was at 60% and within 6 it was at about 52%. I checked my battery usage, the only apps I'd used were Apple Music which took 16%, messenger which used 5%, and Facebook which used 2%. All tabs were closed after I'd finished with the app, also. After seeing this, I was really shocked as to why it has drained so fast, considering I was told with light - moderate use it should last all day easily. Is this the average battery drainage or could something be up? It's not the worst battery I've ever had, but certainly isn't the battery I was expecting given how much the people in the shop/in reviews I'd seen had praised it.
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New phones or reset/cleared data/cache(rom flash, kernel etc.) need several days for the battery to calibrate. Give it some time to adjust, also could be settings or rogue app that is draining the battery. If it doesnt seem better you can use BBS(better battery stats) app or similar to see exactly what is going on

Just to clarify you're talking about a pixel XL 2, as your title suggests? Just a bit confused as you've written this in the pixel 2 (non XL) forum.
For what it's worth though, I had a pixel 2 XL before my current pixel 2 (I moved just because I wanted something slightly more bitesize). In terms of screen on time I would quite easily get 6.5-7.5 hours on the XL all on stock and it just seemed to keep on going. My pixel 2 is also awesome albeit doesn't last quite as long. I'm currently on 17% and I have 5.15hours of screen on time. I've also used over an hour of Spotify with streaming over Bluetooth with that - so it definitely is good. It's also early days as this phone is new!

@sstanton86:
Careful with that battery usage. The latest word I've seen from Cadex is to keep it between 40% and 90% (or a little less if you can) for longest life. And with a non-removable battery, that's probably what most of us want. (IOW, latest tests show that even if we give it more charging cycles, it lasts longer if we don't go too far up or much below half down. 17% might give you props, but it won't give you a great battery in 3 years.)

Rukbat said:
@sstanton86:
Careful with that battery usage. The latest word I've seen from Cadex is to keep it between 40% and 90% (or a little less if you can) for longest life. And with a non-removable battery, that's probably what most of us want. (IOW, latest tests show that even if we give it more charging cycles, it lasts longer if we don't go too far up or much below half down. 17% might give you props, but it won't give you a great battery in 3 years.)
Click to expand...
Click to collapse
Thanks, appreciate the tips - but bear in mind this was just the first few days of having the phone and it does typically represent my usage. If I charge once a day from around 10-30% to 100% of course it's naturally going to degrade. Bit by the 12 month mark, but likelihood is I'll have the pixel 3 then so it doesn't bother me too much!

One of the things that convinced me to bite the bullet was that the P2 will be supported until R (raspberry-something?), so I'll still be up to date almost 4 years from now. (I don't even have a fingerprint reader on my current - and flagship - phone, but by 2020, I might just be ready for the Pixel 4 or 5.)
(And to think - I used to be a dealer walking around with 4 phones on my belt [we sold 4 carriers] and I'd think nothing of grabbing a new phone as soon as it came out and using it until something nicer came out - now I wait 4 years to upgrade.)

And with the 2 year warranty, the phone might be replaced
Sent from my Pixel 2 using XDA-Developers Legacy app

For a short battery life? Batteries are consumables (and you can kill a completely good battery in a month by treating it wrong), so even a battery that throws a dendrite most likely wouldn't be replaced (and that's not only a manufacturing defect, it's a defect in the technology itself).

Rukbat said:
@sstanton86:
Careful with that battery usage. The latest word I've seen from Cadex is to keep it between 40% and 90% (or a little less if you can) for longest life. And with a non-removable battery, that's probably what most of us want. (IOW, latest tests show that even if we give it more charging cycles, it lasts longer if we don't go too far up or much below half down. 17% might give you props, but it won't give you a great battery in 3 years.)
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Do you have the reference for this? 40% - 90% is using 50% of the battery capacity. If that works for you, the chart below would suggest a range from 25% - 75% would give optimal number of cycles, unless I'm reading it wrong. It seems it's the higher % of charge state that stresses the battery most.
The chart below comes from here http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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First, that's for a 1C charge - cellphones, even Quickcharge 3, don't get near that. (A 1C charge would be charging a 3000mAh battery at 3 Amps).
Second, I use Cadex' chart from the same article:
Table 2: Cycle life as a function of
depth of discharge. A partial discharge reduces stress and prolongs battery life, so does a partial charge. Elevated temperature and high currents also affect cycle life.
Note: 100% DoD is a full cycle; 10% is very brief. Cycling in mid-state-of-charge would have best longevity.
100% DoD ~300 / 600
80% DoD ~400 / 900
60% DoD ~600 / 1,500
40% DoD ~1,500 / 3,000
20% DoD ~1,500 / 9,000
10% DoD ~10,000 / 15,000
But it's recently been discovered (no, sorry, that link I don't have) that charging to 90% is better for longer life than charging to 100%.

Rukbat said:
@sstanton86:
Careful with that battery usage. The latest word I've seen from Cadex is to keep it between 40% and 90% (or a little less if you can) for longest life. And with a non-removable battery, that's probably what most of us want. (IOW, latest tests show that even if we give it more charging cycles, it lasts longer if we don't go too far up or much below half down. 17% might give you props, but it won't give you a great battery in 3 years.)
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Click to collapse
Rukbat said:
First, that's for a 1C charge - cellphones, even Quickcharge 3, don't get near that. (A 1C charge would be charging a 3000mAh battery at 3 Amps).
Second, I use Cadex' chart from the same article:
Table 2: Cycle life as a function of
depth of discharge. A partial discharge reduces stress and prolongs battery life, so does a partial charge. Elevated temperature and high currents also affect cycle life.
Note: 100% DoD is a full cycle; 10% is very brief. Cycling in mid-state-of-charge would have best longevity.
100% DoD ~300 / 600
80% DoD ~400 / 900
60% DoD ~600 / 1,500
40% DoD ~1,500 / 3,000
20% DoD ~1,500 / 9,000
10% DoD ~10,000 / 15,000
But it's recently been discovered (no, sorry, that link I don't have) that charging to 90% is better for longer life than charging to 100%.
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Click to collapse
You mentioned keeping between 40% and 90%, which is a 50% DOD. I think charging to less than 90% is much better so 70% -> 20% (or even 50% - > 0%) is much better than 90% -> 40%. Basically, what kills the battery is how full it is when you stop charging it.
I charge my phone up to about 70% unless I know I'm going to need the extra capacity.
Also see here
https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
and here
https://accubattery.zendesk.com/hc/en-us/articles/212988989-About-the-Battery-University-article

I bought a Pixel 2 (non XL) 2 days ago, went straight for the March update and have only installed limited amount of apps. 25% brightness and 4G disabled (only using 3g) and no bluetooth.
Day 1: 100% charge overnight 68% battery left at around 17:00
Day 2 100% charge overnight 73% battery left right now Screen usage since full charge: 1h 31m
Does this seem normal? I was a bit surprised that I "only" had 68% left after the first day since I barely used the phone.
Or should I just let it calibrate and not think about it for a few days?

quuz said:
I bought a Pixel 2 (non XL) 2 days ago, went straight for the March update and have only installed limited amount of apps. 25% brightness and 4G disabled (only using 3g) and no bluetooth.
Day 1: 100% charge overnight 68% battery left at around 17:00
Day 2 100% charge overnight 73% battery left right now Screen usage since full charge: 1h 31m
Does this seem normal? I was a bit surprised that I "only" had 68% left after the first day since I barely used the phone.
Or should I just let it calibrate and not think about it for a few days?
Click to expand...
Click to collapse
Make a factory reset and wait 3 days to see if there are any changes. I usually lose around 3-4% overnight which sound reasonable.

New battery health

I’m curious about battery health as reported by Accubattery (I can’t find the battery health stat in the phone itself). I’ve had the 4a 5-6 days and the health is at 97% (3048/3140). Is that normal?
I had some issues with battery drain at first, getting around 4.5 hours (a few people here pointed out it’s likely due to it not being on wifi). But I did a factory reset and it seems to be doing better (now I’m on track for ~6).
I‘ve read battery health numbers aren’t super accurate so I imagine some fluctuation is normal. Just trying to verify whether I’ve lost 3% battery life in a week. Thanks!

I bought it a month ago. Holds at 104% for 3 weeks, and recently dropped sharply to 99%. I think you shouldn't believe the program

Li's like being use in their mid range; short midrange cycles/more frequent partial charges.
High cell voltage and high temperatures cause premature wear. Accubattery is encouraging this partial charge strategy although it's not necessary accurate.
Don't charge your battery to 100% very often.
80% is better, 64-70% is best.
Don't discharge past 20%, a low limit of 30-40% is best.
Never charge if battery is below 40F.
Avoid starting a charge if battery is below 72F whenever possible.
Low temp charging can cause Li plating which will permanently degrade the cell.
Avoid charging over 100F.
75-90F is best
Fast charging causes no harm.

cool thanks. accubattery went from 97% to 98% a few days later so I don't think it's super accurate. I've never had it say 100% on this new battery though so I'm worried it's a bit low but oh well. Thanks all.

suda space said:
cool thanks. accubattery went from 97% to 98% a few days later so I don't think it's super accurate. I've never had it say 100% on this new battery though so I'm worried it's a bit low but oh well. Thanks all.
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First you need to set whatever is the actual capacity of the battery. Accubattery will use the capacity that the Android is reporting, typically 4170 for a 4300 ma battery in the Note 10+ case.
It's wrong; but Android is the culprit in this case.
Accubattery is a very useful apk. It adjustable alert when charged to X% is great. It also logs net power charging/discharging. I use it for battery temp too.
People expect too much out of it.
I doubt it's low, in fact it may well have a slightly higher than rated capacity. Take care of it and you can milk years out of it. Frequent midrange charges, and watch the heat.
If the phone battery temp when using gets into the high 90's, cool it down. I use a damp microfiber cloth or rag.
At a battery temp of 102F I screen off the device.

blackhawk said:
Li's like being use in their mid range; short midrange cycles/more frequent partial charges.
High cell voltage and high temperatures cause premature wear. Accubattery is encouraging this partial charge strategy although it's not necessary accurate.
Don't charge your battery to 100% very often.
80% is better, 64-70% is best.
Don't discharge past 20%, a low limit of 30-40% is best.
Never charge if battery is below 40F.
Avoid starting a charge if battery is below 72F whenever possible.
Low temp charging can cause Li plating which will permanently degrade the cell.
Avoid charging over 100F.
75-90F is best
Fast charging causes no harm.
Click to expand...
Click to collapse
Info is misleading, outdated (overlooks recent battery refinements) and originally based on much larger packs used in laptops, etc. Mobile devices discharge frequently, rarely spending significant time at high charge levels. Laptops are often tethered to a desk and charger for extended periods.
While there's nothing amiss with avoiding extremes one should not feel compelled to carry around a damp microfiber cloth (lol) to cool the phone when it reaches body temp. Yep, battery capacity may drop 10% over the life of the device by not getting panties in a knot over thermals. It's just a phone ...

DB126 said:
Info is misleading, outdated (overlooks recent battery refinements) and originally based on much larger packs used in laptops, etc. Mobile devices discharge frequently, rarely spending significant time at high charge levels. Laptops are often tethered to a desk and charger for extended periods.
While there's nothing amiss with avoiding extremes one should not feel compelled to carry around a damp microfiber cloth (lol) to cool the phone when it reaches body temp. Yep, battery capacity may drop 10% over the life of the device by not getting panties in a knot over thermals. It's just a phone ...
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Click to collapse
This has nothing to do with laptops although on my e6400 you can software disable battery charging at will.
The Li battery weakness is it's user. Any time it's taken to a full charge you are doing substantially more damage than a 64% top off. One full charge cycle vs >1/20% a full charge cycle.
That's a lot of lost life.
You'll get about 2 years out of it or less with your plan if you're a heavy user.
Rather inept management when you could get years more...

blackhawk said:
This has nothing to do with laptops although on my e6400 you can software disable battery charging at will.
The Li battery weakness is it's user. Any time it's taken to a full charge you are doing substantially more damage than a 64% top off. One full charge cycle vs >1/20% a full charge cycle.
That's a lot of lost life.
You'll get about 2 years out of it or less with your plan if you're a heavy user.
Rather inept management when you could get years more...
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Click to collapse
We'll agree to disagree on the applicability and merits of aggressive battery management on modern mobile devices. I am quite familiar with the arguments but have no stomach to rehash the details (which matter). Best wishes, mate.

DB126 said:
We'll agree to disagree on the applicability and merits of aggressive battery management on modern mobile devices. I am quite familiar with the arguments but have no stomach to rehash the details (which matter). Best wishes, mate.
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Fair enough... the devil is in the details.
I'll see how my 10+ does. Lol I may end up tearing it down to replace the bloody charging port before the battery needs replacement
A battery replacement isn't the end of the world.
Cheers, mate.

Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .

blackhawk said:
Fair enough... the devil is in the details.
I'll see how my 10+ does. Lol I may end up tearing it down to replace the bloody charging port before the battery needs replacement
A battery replacement isn't the end of the world.
Cheers, mate.
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Click to collapse
Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .

Mi Nabil said:
Hi
I bought my phone 4 weeks ago . I am currently using Realme 8 pro.
In accubattery it shows i have 89% battery health. Is accubattery accurate?
It makes me concern why my battery sustaining so fast .
Click to expand...
Click to collapse
Not really. The value it uses is from the Android OS its self which is inaccurate and constant.
In my case it is 4100 mAh.
On my original 4300 mAh battery it was off by 200 mAh, on the replacement 300. Assuming the battery was as speced. It could have even been over the speced value.
Depending on the battery temperature and the charge range Accubatter's estimate can vary by 200 even 300 mAh.
Set it so it will read 100% by entering the value Accubattery thinks it sees when the battery is fully charged. It makes it easier and less dissettling to track
In the course of the battery's life you'll probably end up reloading and losing the data but for short term monitoring it's very useful.
It's logging history is great for quickly spotting excessive battery usage or slow charging. With those considerations in mind it's a useful tool that doesn't consume very battery it's self.
After the Pro version is active I firewall* block it as it is constantly in internet contact otherwise... I don't need that. If you disable Playstore or Google play Services it will revert back to the free version unless firewall blocked I disable the former two most of the time so there's that.
That's my biggest complaint about it.
*Karma Firewall, a great freeware apk that uses almost no battery

Sir in my case it showed accurate capacity of my battery.
When charged my phone first my phone had 99% battery health.
But 4 weeks later it says something 89 percent.
I don't know about battery science. But can you tell me in short is it okay? . Or i should go to coutomer care?

Mi Nabil said:
Sir in my case it showed accurate capacity of my battery.
When charged my phone first my phone had 99% battery health.
But 4 weeks later it says something 89 percent.
I don't know about battery science. But can you tell me in short is it okay? . Or i should go to coutomer care?
Click to expand...
Click to collapse
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.

blackhawk said:
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.
Click to expand...
Click to collapse
One more question sir.
What is better for battery health charging 20 to 100% once or charging 20 to 80% twice in a day.

blackhawk said:
Really I doubt they would accept Accubattery's data.
When your SOT drops significantly and it's not because of excessive battery usage by apk(s), then you know you have a problem.
Heavily used phones will get about 1-2 years of usable battery life. I'll probably replace mine again at the 1 year mark.
If you want it to last longer only charge to 80-90%
Don't discharge below 30%
Li's like frequently midrange charge/discharge cycles. Frequent midrange partial charges prolong their life a lot.
Never charge if below 40°F
Do not charge below 72°F, 85-95F is the optimum start charge temperature.
Do not allow battery temperature to exceed 100F when charging, cool as needed.
Click to expand...
Click to collapse
Sir can you please answer my last question?
That i have qutioned you in previous reply

How hot is to hot? (phone cpu+battery)

I just got a warning from my relatively new (10 day old phone) that it was closing down applications due to a battery temperature of 62.4C and a CPU tempereature of 59C is this normal?
I am not 100% sure which one it was complaining about, I believe the battery temp

What phone?!!

blackhawk said:
What phone?!!
Click to expand...
Click to collapse
Oppo x3 find pro

PaulGWebster said:
Oppo x3 find pro
Click to expand...
Click to collapse
It was not quite it's fault though ... I was doing some cooking and shoved it out of the way on a pyrex shelf that was well ... warmer than I expected
Just hope I have not caused it any serious
harm ... it all appears fine, though it had been sat on the shelf 6 hours while stew was being made >.>

144°F is hot for a cell phone battery, although technically it's close to some Li's max operating temperature range.
Shutdown temperature on Samsung phones for the battery is around 108F. I don't go over 103F battery temp and typically go screen off at a battery temperature 101F.
The cpu can run hotter.
Is the processor running a high load?
If so the big question is what's ramping up the cpu cycle usage? Find the problem app(s) and sort out the problem.
It sucking up internet bandwidth? Bloatware?
What's using the most battery?
Try in safe mode.
You're burning up the battery longevity. Limit the top charge to 80% for now until you resolve this issue. Keep screen brightness at 50% or lower.
Running at or near shutdown temperatures can cause permanent damage. It's especially hard on a fully charged Li battery.
Edit, you posted while I was replying. You may have knock some life out of the battery. I had one over temperature event on a fully charged Note 10+ battery that caused it to lose about 5% of its capacity. It failed a little more then a year latter.
3 things Li's don't like; full charges, high temperatures and charging below 72F.
Never attempt to charge if below 40F.

I agree. The only damage will be to the battery. The phone itself can withstand well over 100c without problems. The internals can take soldering which is 300c ish. The battery however, not too fond of anything above room temp.

at least a one off, won't sit it up there again!
Also seems to have been lucky it does not seem to have had aany affect

blackhawk said:
144°F is hot for a cell phone battery, although technically it's close to some Li's max operating temperature range.
Shutdown temperature on Samsung phones for the battery is around 108F. I don't go over 103F battery temp and typically go screen off at a battery temperature 101F.
The cpu can run hotter.
Is the processor running a high load?
If so the big question is what's ramping up the cpu cycle usage? Find the problem app(s) and sort out the problem.
It sucking up internet bandwidth? Bloatware?
What's using the most battery?
Try in safe mode.
You're burning up the battery longevity. Limit the top charge to 80% for now until you resolve this issue. Keep screen brightness at 50% or lower.
Running at or near shutdown temperatures can cause permanent damage. It's especially hard on a fully charged Li battery.
Edit, you posted while I was replying. You may have knock some life out of the battery. I had one over temperature event on a fully charged Note 10+ battery that caused it to lose about 5% of its capacity. It failed a little more then a year latter.
3 things Li's don't like; full charges, high temperatures and charging below 72F.
Never attempt to charge if below 40F.
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Click to collapse
Ah that is fien I only use C

I wonder if the phone will even tell me if it has lost capacity .... it seemed to charge to 100% this morning, but im not sure if that is 100% of what remains or 100% of its undamanged sate

PaulGWebster said:
Ah that is fien I only use C
Click to expand...
Click to collapse
The Fahrenheit system is better suited for everyday life. It uses whole numbers in the temperature ranges most used real life.
Lol, walking a klick is easier than a mile, mph is faster, and a °C is a lot hotter than a degree in F.
Consider your cpu heatsink broke in and well seated
You will see lost capacity as a decrease of SOT.
The % indicator doesn't see capacity per se but voltage level only.
Keep an eye open for cover bulging; any battery swelling is a failure.
Watch for shifts in charging time and erratic fast charging. As a battery degrades or fails these change, it can be slow or overnight.
After seeing one failure on my heavily used device I decided to just change out the battery every year or so. It's not worth destroying the display over or deal with the loss in capacity. Most batteries aren't that hard to replace once you know how. In a few phones though it's not pretty. The Note 10+ is rated as hard but in reality it's not if done correctly... so actually watch one being replaced in person if possible.

blackhawk said:
The Fahrenheit system is better suited for everyday life. It uses whole numbers in the temperature ranges most used real life.
Lol, walking a klick is easier than a mile, mph is faster, and a °C is a lot hotter than a degree in F.
Consider your cpu heatsink broke in and well seated
You will see lost capacity as a decrease of SOT.
The % indicator doesn't see capacity per se but voltage level only.
Keep an eye open for cover bulging; any battery swelling is a failure.
Watch for shifts in charging time and erratic fast charging. As a battery degrades or fails these change, it can be slow or overnight.
After seeing one failure on my heavily used device I decided to just change out the battery every year or so. It's not worth destroying the display over or deal with the loss in capacity. Most batteries aren't that hard to replace once you know how. In a few phones though it's not pretty. The Note 10+ is rated as hard but in reality it's not if done correctly... so actually watch one being replaced in person if possible.
Click to expand...
Click to collapse
*mumbles kelvin*
I am not sure I will be able to actually see battery swell ... the front of the case is glass, the back is metal and its IP 68 ...
I bet there is an app for actual battery condition out there though!
There certainly is for laptops etc, SOT? something of time .... my guess is surcharge over time?

PaulGWebster said:
*mumbles kelvin*
I am not sure I will be able to actually see battery swell ... the front of the case is glass, the back is metal and its IP 68 ...
I bet there is an app for actual battery condition out there though!
There certainly is for laptops etc, SOT? something of time .... my guess is surcharge over time?
Click to expand...
Click to collapse
It will either push up the display or rear cover. I missed that early warning on my Note 10+ because of the case, oops. I was very lucky it didn't damage the display.
When the battery reaches 80% of what its new capacity was, it's reached the end of its useful service life and is considered degraded. Degraded Li's are much more likely to fail. If it shorts internally it can make a hot mess of the phone. Degraded cells are more likely to form dendrites that puncture the anode/cathode insulation and cause a short. Cold charging can cause Li plating which permanently damages the cell capacity... avoid charging under 72F, although a minimum of 82F is a preferable start charge temperature
Accubattery's charge/discharge logging feature is very useful as is the handy battery temp reading. I firewall block it though.
Screen On Time, I use to find misbehaving apps and gauge the battery over time. My typical usage is 7-13%@hr. 7-8% browser, 10-12% watching vids.

hmmm a 15 minute charge put it at 87% charged

PaulGWebster said:
hmmm a 15 minute charge put it at 87% charged
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I go by % per minute. On the N10+ when fast charging between 30-70% it runs at 2%@min.
On a bad battery it increases to 3%@min, or fast charging will fail to engage in spite of meeting % and temperature range requirements.
A failing battery will charge too quickly and/or erratically.
Accubattery makes it easy to overview the behavior.
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blackhawk said:
I go by % per minute. On the N10+ when fast charging between 30-70% it runs at 2%@min.
On a bad battery it increases to 3%@min, or fast charging will fail to engage in spite of meeting % and temperature range requirements.
A failing battery will charge too quickly and/or erratically.
Accubattery makes it easy to overview the behavior.
View attachment 5531093
Click to expand...
Click to collapse
Well ... appanrelt my oppo is now reporting 30% is the new 100%

PaulGWebster said:
Well ... appanrelt my oppo is now reporting 30% is the new 100%
Click to expand...
Click to collapse
What do you mean? It lost calibration or capacity?

blackhawk said:
What do you mean? It lost calibration or capacity?
Click to expand...
Click to collapse
It is meant to carry a Li-Po 4500 mAh, non-removable battery, the current rated charge at 100% is 1017mAh

PaulGWebster said:
It is meant to carry a Li-Po 4500 mAh, non-removable battery, the current rated charge at 100% is 1017mAh
Click to expand...
Click to collapse
Where is that coming from?
What's your typical SOT?

Every battery is losing capacity over the time, nobody can hinder this. But this can get slowed down if discharging / charging the battery is correctly done.

Question 85% VS 100% - and why?

I have always charged my phones to 100%, this 85% thing is very new to me.
I've never heard about it before until I saw it in my S22 ULTRA.
What are the benefits of charging only to 85%? Does it last as much as with 100%?
Does it really recommended to charge it up to 85%? Im not an heavy user, but also I'm not changing my phone once a year, I'm changing it one time in 3-4 years.
Also, I tried to never charge my phone at night, and trying to catch the battery not lower than 10-15 percent to charge.
So basically, it bothers me a little bit in the eye to see that the phone is only about 85%, because that way basically the battery will run out much faster(significantly, yesterday 10% went down in 45 minutes, which means I'll lose 45 minutes from battery usage for nothing).
So, my question is, is it really worth it? Is there a significant difference between the two options? I'd love your help, thank you all!

The 85% is to protect and prolong the battery life. I agree that you will loose 15% of battery time if not charging to 100%. I charge to 100% and when battery is 10 - 15 I charge to full. I guess on the long run it's better for the battery to only charge to 85%, but I change phones every year or 2, so I'm not to worried about prolonging the battery life

Set low limit at 30-40%
Top limit of 72-85% is better.
Li's love frequent midrange power cycling.
Start charge temperature is important to prevent Li plating. Battery should be at least at 72F, 82-90F is better. Cool if charging temperature goes above 99F. Never charge in direct sunlight.
Never attempt to charge at 40F or lower
Avoid having the screen on while changing.
When using, turn phone off if battery temperature reaches 100F or cool it.
Replacing the battery isn't a big deal unless you don't do it on a timely basis. When an Li has reached 80% of it's original capacity it's reached the end of it's useful service life and is degraded.
Degraded Li's are more likely to fail which can heavily damage the phone. Any swelling is a failure replace immediately.
High voltage , temperature and current drain stress the battery. Other than avoiding low temperature charging and going to either low/high extreme voltage ranges constantly I wouldn't worry about it too much.
I now replace my heavily used Note 10+ battery every year or so to avoid another failure, routine maintenance. Batteries are cheap and relatively easy to replace.

blackhawk said:
Set low limit at 30-40%
Top limit of 72-85% is better.
Li's love frequent midrange power cycling.
Start charge temperature is important to prevent Li plating. Battery should be at least at 72F, 82-90F is better. Cool if charging temperature goes above 99F. Never charge in direct sunlight.
Never attempt to charge at 40F or lower
Avoid having the screen on while changing.
When using, turn phone off if battery temperature reaches 100F or cool it.
Replacing the battery isn't a big deal unless you don't do it on a timely basis. When an Li has reached 80% of it's original capacity it's reached the end of it's useful service life and is degraded.
Degraded Li's are more likely to fail which can heavily damage the phone. Any swelling is a failure replace immediately.
High voltage , temperature and current drain stress the battery. Other than avoiding low temperature charging and going to either low/high extreme voltage ranges constantly I wouldn't worry about it too much.
I now replace my heavily used Note 10+ battery every year or so to avoid another failure, routine maintenance. Batteries are cheap and relatively easy to replace.
Click to expand...
Click to collapse
So, I understand that it recommended to charge up to 85%? :-D
I searched on google to buy a S22 ultra battery that will keep in home until I need it, but couldn't find one.

maor23 said:
I have always charged my phones to 100%, this 85% thing is very new to me.
I've never heard about it before until I saw it in my S22 ULTRA.
What are the benefits of charging only to 85%? Does it last as much as with 100%?
Does it really recommended to charge it up to 85%? Im not an heavy user, but also I'm not changing my phone once a year, I'm changing it one time in 3-4 years.
Also, I tried to never charge my phone at night, and trying to catch the battery not lower than 10-15 percent to charge.
So basically, it bothers me a little bit in the eye to see that the phone is only about 85%, because that way basically the battery will run out much faster(significantly, yesterday 10% went down in 45 minutes, which means I'll lose 45 minutes from battery usage for nothing).
So, my question is, is it really worth it? Is there a significant difference between the two options? I'd love your help, thank you all!
Click to expand...
Click to collapse
If you can last to bedtime on an 85% charge then fine use that setting if you intend to keep the device for 3 years or longer.
If (like me) you need 100% charge to get through the day, continue charging to 100% and dont worry.
I have been using mobile phones for 25 years and I charge overnight as I sleep. I have NEVER had a battery failure or problems.
Life is short, enjoy your new phone
P.S. If you are worried about stressing the battery by charging to 100%, I suggest you also disable Fast-Charging as that is WORSE for a battery cell than 100% vs 85% iMHO.

I used to charge my Note 10+ to 100%, every day plug it while in my car or plug it to my laptop now and then. After 2 years of use battery health was 89%.
On my Lenovo laptop I stop charging at 60% as suggested by Lenovo vantage. Bull****. Battery lasts a lot less after one year. Almost the half.
Enjoy your gadgets and mobiles. Anyway after 2 years most of us get a new one.

blackhawk said:
Set low limit at 30-40%
Top limit of 72-85% is better.
Li's love frequent midrange power cycling.
Start charge temperature is important to prevent Li plating. Battery should be at least at 72F, 82-90F is better. Cool if charging temperature goes above 99F. Never charge in direct sunlight.
Never attempt to charge at 40F or lower
Avoid having the screen on while changing.
When using, turn phone off if battery temperature reaches 100F or cool it.
Replacing the battery isn't a big deal unless you don't do it on a timely basis. When an Li has reached 80% of it's original capacity it's reached the end of it's useful service life and is degraded.
Degraded Li's are more likely to fail which can heavily damage the phone. Any swelling is a failure replace immediately.
High voltage , temperature and current drain stress the battery. Other than avoiding low temperature charging and going to either low/high extreme voltage ranges constantly I wouldn't worry about it too much.
I now replace my heavily used Note 10+ battery every year or so to avoid another failure, routine maintenance. Batteries are cheap and relatively easy to replace.
Click to expand...
Click to collapse
how does one set low limit?
i have a smart plug i use for my charger, only on long enough to charge phone from 20% to 85% (battery setting limit enabled).
i usually charge at 30% to 85%.

Slade8525 said:
how does one set low limit?
i have a smart plug i use for my charger, only on long enough to charge phone from 20% to 85% (battery setting limit enabled).
i usually charge at 30% to 85%.
Click to expand...
Click to collapse
I just do it by eye. It's not rocket science.
Accubattery lets you set an alarm if you want.

maor23 said:
So, I understand that it recommended to charge up to 85%? :-D
I searched on google to buy a S22 ultra battery that will keep in home until I need it, but couldn't find one.
Click to expand...
Click to collapse
Keeping a spare isn't a good plan as Li's start to degrade as soon as assembled. So after a year or more of sitting there it will have lost some of its initial capacity.
They should became easier in the future.

Any solution to modify the protect level?
"protect battery level 90%, 95% mod instead of 85%"
85% seem to be very short time of using

For anybody wanting to change the limit from 85% to lets say 90%, you can use the App called Galaxy Max Hz, you can find it on this forum : https://forum.xda-developers.com/t/...ods-qs-tiles-tasker-support-and-more.4404929/
One of the options is to change the battery charge limit, on the lock screen it will still say : "Charging stopped at 85%" even though the battery is at 90% as set in Galaxy Max Hz

coolpixs4 said:
Any solution to modify the protect level?
"protect battery level 90%, 95% mod instead of 85%"
85% seem to be very short time of using
Click to expand...
Click to collapse
85% is actually rather on the high side. Either correct the excessive battery drain or replace the battery. When an Li reaches 80% of its original capacity it's reached the end of its usable service life. It's degraded at that point. Degraded Li's are much more likely to fail. Any battery swelling is a failure.

My device does not have 'protect battery' toogle on quick settings
SS22+ OneUI4.1

coolpixs4 said:
Any solution to modify the protect level?
"protect battery level 90%, 95% mod instead of 85%"
85% seem to be very short time of using
Click to expand...
Click to collapse
bixby probably

Actually, the protection level should be 80% or less to maximize the battery’s useful life.

malikin said:
bixby probably
Click to expand...
Click to collapse
coolpixs4 said:
Any solution to modify the protect level?
"protect battery level 90%, 95% mod instead of 85%"
85% seem to be very short time of using
Click to expand...
Click to collapse
verszipo said:
For anybody wanting to change the limit from 85% to lets say 90%, you can use the App called Galaxy Max Hz, you can find it on this forum : https://forum.xda-developers.com/t/...ods-qs-tiles-tasker-support-and-more.4404929/
One of the options is to change the battery charge limit, on the lock screen it will still say : "Charging stopped at 85%" even though the battery is at 90% as set in Galaxy Max Hz
Click to expand...
Click to collapse

freco said:
I used to charge my Note 10+ to 100%, every day plug it while in my car or plug it to my laptop now and then. After 2 years of use battery health was 89%.
On my Lenovo laptop I stop charging at 60% as suggested by Lenovo vantage. Bull****. Battery lasts a lot less after one year. Almost the half.
Enjoy your gadgets and mobiles. Anyway after 2 years most of us get a new one.
Click to expand...
Click to collapse
I use the 60% protection on my Lenovo as they suggested and gess what, after 8 years my battery still works fine, and lasts for 2h/3h. I used my laptop every workday on heavy use, and it's the most cheap line, it cost me 300€ in 2015 (Lenovo G50-30 Celeron N2840). It's all day pluged, but when i need to use on battery it's fine!
So i realy think this battery protection works, and my S22 Ultra it's for last at least 5 years, and the 85% it's enough to run my workday.

burnin said:
I use the 60% protection on my Lenovo as they suggested and gess what, after 8 years my battery still works fine, and lasts for 2h/3h. I used my laptop every workday on heavy use, and it's the most cheap line, it cost me 300€ in 2015 (Lenovo G50-30 Celeron N2840). It's all day pluged, but when i need to use on battery it's fine!
So i realy think this battery protection works, and my S22 Ultra it's for last at least 5 years, and the 85% it's enough to run my workday.
Click to expand...
Click to collapse
Maybe. Depends on usage. On my N10+ which is heavily used with frequent charge cycling from 40-60% to 72 to 85% most times I get about 2 years out of a battery. Higher battery temperature shortens the lifespan as well. Fast charging is more stressful as is using the device right after a fast charge. High current drain while in use is also stressful; optimize the device to increase SOT and battery lifespan.
Frequent partial charge power cycling can extent the typical 200 full charge cycles to 800 or more. A partial charge is not a full charge cycle.
Start charge temperature matters.
It's an electrochemical reaction, heat is required for it to charge properly!
-//-
Never attempt to charge if near freezing
Fast charging will not engage if battery temperature is below about 55F to protect the battery.
Charging below 72F or above 103F can cause Li plating which will permanently degrade the cell.
Optimum start temperature is 82-90F, cutoff is 100-102F max. Cool if needed.
Regardless of service time replace the Li when it reaches 80% of its original capacity. At 80% it's reached the end of its service life and is considered degraded. Degraded Li's are more likely to fail
Any swelling is a failure and it can destroy the device. Battery replacement isn't hard or expensive. Just part of routine maintenance...

maor23 said:
I have always charged my phones to 100%, this 85% thing is very new to me.
I've never heard about it before until I saw it in my S22 ULTRA.
What are the benefits of charging only to 85%? Does it last as much as with 100%?
Does it really recommended to charge it up to 85%? Im not an heavy user, but also I'm not changing my phone once a year, I'm changing it one time in 3-4 years.
Also, I tried to never charge my phone at night, and trying to catch the battery not lower than 10-15 percent to charge.
So basically, it bothers me a little bit in the eye to see that the phone is only about 85%, because that way basically the battery will run out much faster(significantly, yesterday 10% went down in 45 minutes, which means I'll lose 45 minutes from battery usage for nothing).
So, my question is, is it really worth it? Is there a significant difference between the two options? I'd love your help, thank you all!
Click to expand...
Click to collapse
Here is a good article why it's recommended to not load the batt to 100%
How to maximize battery life: Charging habits and other tips
If you've ever wondered what the best way to charge your battery is, here are some scientifically proven tips for maximizing battery life.
www.androidauthority.com
Personally i just keep the load between 65% and around 20-30%. Only if i know that i will leave the house longer than 4 hours I do a 85% load or 100% if i want to film and take photos. But this rarely happens.

Question Battery protection experience

To those that have use the phone for a year what is your battery health percentage without battery protection and with battery protection, im just trying to see if using the battery protection is worth it or not

There is no question concerning battery protection, if you use a device with a lithium ion battery and only use it between 30 and 80 % this will greatly extend the useful life of the battery. Using a smartplug and software to control the charger plugged into it, I have a five year old Pixel phone with a battery health percengage above 85% that’s still working fine.
I only wish that Samsung’s battery protection option was 80% instead of 85%, which would better enhance battery life.

Almost a year with the phone (10 months), always used the battery protection. Stock One UI 5.1, Snapdragon version.
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1. Never used battery protection feature because I always charge my phone to 100% and keep it connected for another 5 minutes or so.
2. I don't use Adaptive Battery feature either because I haven't seen any benefits from it.
3. Lots of theories on keeping the phone battery between some range. I don't follow it because benefits from such practices are insignificant during the expected ownership life of the phone (about 5 years on average).

I turned off battery protection 1 year ago and never looked back. Today, at 100% charge it says I have 1d19h of charge remaining. I charge my phone to 100% every night while I sleep. I see no difference in my battery performance at all.

evertroy said:
I turned off battery protection 1 year ago and never looked back. Today, at 100% charge it says I have 1d19h of charge remaining. I charge my phone to 100% every night while I sleep. I see no difference in my battery performance at all.
Click to expand...
Click to collapse
As I previously stated, self implemented battery protection on several phones I have owned made a huge difference for me. Charging to 100% every night left me with a very noticeable decrease in battery capacity within a year and a half or so. Maintaining the battery between 30 - 80% produces a night and day difference in battery endurance. I still own a Pixel 2XL that has never been charged to 100% and the battery capacity is around 85% and the phone still works great.

According to Accu Battery my S22U was at 99% after 1 year of charging to 85%. I never used wireless fast charging and kept the charge between 35 - 85%.
Everyone has an opinion on this. I have no problem getting 2 days of use charging to 85% so why charge to 100%.

neilth said:
There is no question concerning battery protection, if you use a device with a lithium ion battery and only use it between 30 and 80 % this will greatly extend the useful life of the battery. Using a smartplug and software to control the charger plugged into it, I have a five year old Pixel phone with a battery health percengage above 85% that’s still working fine.
I only wish that Samsung’s battery protection option was 80% instead of 85%, which would better enhance battery life.
Click to expand...
Click to collapse
You can set battery protect to turn on at whatever battery percentage utilizing Samsung Routine. I did this for a while at 90%, but have since turned it off as I will most likely upgrade my phone by next year.

I use battery protection overnight and whenever I need my phone connected. Ex: Android Auto.

neilth said:
As I previously stated, self implemented battery protection on several phones I have owned made a huge difference for me. Charging to 100% every night left me with a very noticeable decrease in battery capacity within a year and a half or so. Maintaining the battery between 30 - 80% produces a night and day difference in battery endurance. I still own a Pixel 2XL that has never been charged to 100% and the battery capacity is around 85% and the phone still works great.
Click to expand...
Click to collapse
How big of a difference are we talking here, before i use my S22U i have an Oppo F9 which still have good battery despite charging it too 100% every day for 3 years but that's probably because the SoC isn't very strong to begin with so it doesnt use that much power, while my phone before that which is an iphone 6 that is a hand me down and collectively used for 4 years have really bad battery where i have to charge 2-3 times despite only using it for messaging and youtube
the reason i really care about the battery health on this phone is because of how expensive this phone is compared to the other phone i have in the past and i do plan to use it for a long time

chris2412 said:
How big of a difference are we talking here, before i use my S22U i have an Oppo F9 which still have good battery despite charging it too 100% every day for 3 years but that's probably because the SoC isn't very strong to begin with so it doesnt use that much power, while my phone before that which is an iphone 6 that is a hand me down and collectively used for 4 years have really bad battery where i have to charge 2-3 times despite only using it for messaging and youtube
the reason i really care about the battery health on this phone is because of how expensive this phone is compared to the other phone i have in the past and i do plan to use it for a long time
Click to expand...
Click to collapse
In the past I have had a Sony Z2 and a Nexus 6P both suffer drastic battery degradation in under two years by fully charging them every night. With my next phone, a Pixel 2XL, I started using a smart plug which I configured to be controlled by software monitoring the battery charge and turning off the battery charger when charging reached 80%. After five years, this phone is still operational and its battery health is above 80%. I am now using similar technology on my S23U.

TheMystic said:
1. Never used battery protection feature because I always charge my phone to 100% and keep it connected for another 5 minutes or so.
2. I don't use Adaptive Battery feature either because I haven't seen any benefits from it.
3. Lots of theories on keeping the phone battery between some range. I don't follow it because benefits from such practices are insignificant during the expected ownership life of the phone (about 5 years on average).
Click to expand...
Click to collapse
Been Warp Charging my OnePlus 8T at full speed for 2.5 years now, often charging it twice a day. Battery life is fantastic and so is it's health. Practical experience taught me that some of the theories may be true, but have little practical application. One must NOT bother too much with these things as they ruin user experience.

neilth said:
In the past I have had a Sony Z2 and a Nexus 6P both suffer drastic battery degradation in under two years by fully charging them every night. With my next phone, a Pixel 2XL, I started using a smart plug which I configured to be controlled by software monitoring the battery charge and turning off the battery charger when charging reached 80%. After five years, this phone is still operational and its battery health is above 80%. I am now using similar technology on my S23U.
Click to expand...
Click to collapse
Could you share a link of the smart plug you're using?

I've never used Battery Protect. I charge my phone over night to 100%. I use wireless charging almost exclusively. By the time I leave work, it is at around 78%. I have it set to best performance.
I've taken it on the road several times and always had enough juice to make it to my hotel after 10 hours of traveling.
I haven't noticed any battery degradation.